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LAS VEGAS (AP) — JD Davison had 28 points and 10 assists, Juhann Begarin added 19 points and the Boston Celtics beat the Memphis Grizzlies 108-91 on Thursday for their third straight victory in the NBA Summer League.

Davison, the 53rd pick in the draft, made 5 of 6 field goals in the first half and scored 19 points to help Boston (3-1) take a 51-39 lead. Davison finished 9 of 14 overall, including 4 of 6 from 3-point range.

Justin Jackson added 16 points, Brodric Thomas had 13, and Trevion Williams finished with 11 points and 11 rebounds.

Ziaire Williams scored 21 points for Memphis (2-2). David Roddy and Kenny Lofton Jr. each had 16 points. The Grizzlies were just 3 of 20 from distance.